A discarded silk top-hat becomes the focus of a struggle between a washed-up stage magician and a group of schoolchildren, after it magically brings a snowman to life. Realizing that newly-living Frosty will melt in spring unless he takes refuge in a colder climate, Frosty and Karen, a young girl who he befriends, stow away on a freight train headed for the north pole. Little do they know that the magician is following them, and he wants his hat back!
Jackie Vernon
as Frosty the Snowman (voice)
Jimmy Durante
as Narrator (voice)
Billy De Wolfe
as Professor Hinkle (voice)
Paul Frees
as Santa Claus / Traffic Cop / Additional Voices (voice)
June Foray
as Teacher / Karen / Additional Voices (voice)
Suzanne Davidson
as Karen (voice) (uncredited)
Greg Thomas
as Karen's friends (voice) (uncredited)
